Utility tools for control groups of Linux
Project description
What is cgroup-utils?
cgroup-utils provides utility tools and libraries for control groups of Linux. For example, cgtop is a top-like tool which shows activities of running processes based on the POV of control groups.
Installation
$ python setup.py build $ sudo python setup.py install
Packaging (rpm)
$ python setup.py bdist --formats=rpm
Available subcommands
configs
event
pgrep
stats
top
tree
cgutil configs
This subcommand show you configurations of cgroups. By default, it shows only changed configurations.
Example output
$ cgutil configs -o memory <root> notify_on_release=1 release_agent=/usr/lib/ulatencyd/ulatencyd_cleanup.lua sys_essential swappiness=0 notify_on_release=1 sys_bg swappiness=100 notify_on_release=1
cgutil event
This subcommand makes cgroup.event_control easy to use. It exits when a state of a target cgroup crosses a threshold which you set, thus, you can know the state of the cgroup has changed.
Example output
$ cgutil event /sys/fs/cgroup/memory/system/sshd.service/memory.usage_in_bytes +1M $ # It exits when memory usage of processes in the cgroup has increased one more MB.
cgutil pgrep
This subcommand is alike pgrep command but it shows cgroups in addtion to PIDs.
Example output
$ cgutil pgrep ssh /: 15072 /: 15074 /system/sshd.service: 630 $ cgutil pgrep ssh -l -f /: 15072 sshd: ozaki-r [priv] /: 15074 sshd: ozaki-r@pts/2 /: 15157 /bin/python /bin/cgutil pgrep ssh -l -f /system/sshd.service: 630 /usr/sbin/sshd -D
cgutil stats
This subcommand shows you states of cgroups.
Example output
$ cgutil stats <root> stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L} system stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L} system/sm-client.service stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L} system/sendmail.service stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L} system/vboxadd-service.service stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L} system/colord.service stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L} system/colord-sane.service stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L} system/udisks2.service stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L} system/cups.service stat={'throttled_time': 0L, 'nr_periods': 0L, 'nr_throttled': 0L}
cgutil top
This subcommand is alike top command but it shows activities in a unit of cgroups.
Example output
$ cgutil top -i -n 2 -b 18.1 msec to collect statistics [ CPUACCT ] [ BLKIO ] [ MEMORY ] USR SYS READ WRITE TOTAL RSS SWAP # NAME 0.0% 0.0% 0.0 /s 0.0 /s 0.0 48.0k 0.0 97 usr_1000/default 20.5 msec to collect statistics [ CPUACCT ] [ BLKIO ] [ MEMORY ] USR SYS READ WRITE TOTAL RSS SWAP # NAME 0.0% 0.0% 0.0 /s 0.0 /s 128.0k 4.0k 0.0 104 sys_daemon 0.0% 0.0% 0.0 /s 0.0 /s -64.0k 0.0 0.0 0 sys_essential 0.0% 0.0% 0.0 /s 0.0 /s 108.0k 32.0k 0.0 97 usr_1000/default
cgutil tree
This subcommand shows you tree structure of cgroups.
Example outputs
$ cgutil tree -o blkio <root> `system +sm-client.service +sendmail.service +vboxadd-service.service +colord.service +colord-sane.service +udisks2.service +cups.service +rtkit-daemon.service (snip) +fsck@.service +udev.service `systemd-journald.service
Supported Linux Version
3.4.y
License
The tools are distributed under GPLv2. See COPYING for more detail.
Project details
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